Hi, Jessica,
And welcome to SR!
I can't answer your questions concerning the length of time. But, I'm sure you know that drinking counters the effects of an anti-depressant. So, you've done the right thing by stopping.
Please talk to your doctor about the bipolar issue. Tell him/her that you don't want to start a med unless it's necessary, but, that you have this concern. The two of you need to work together as a team for your best health.
I wish you well. Please let us know how it turns out.
Shalom!